Sessile
Sessile , adjective
[Latin sessilis low, dwarf, from sedere, sessum, to sit: compare French sessile.]
1.
Attached without any sensible projecting support.
2.
(Botany) Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom.
3.
(Zoology) Permanently attached; -- said of the gonophores of certain hydroids which never became detached.